Go-to-definition broken with new DSL

Problem

With the new DSL implementation, IDE go-to-definition functionality is broken for environment field access. When clicking go-to-definition on env.stats.reads, it navigates to the macro internal definition instead of the actual field definition location in the environment block.

Current Behavior

# Clicking go-to-definition on env.stats.reads here:
on_message :get_stats do
  [
    {:reply, {:stats, env.stats.reads, env.stats.writes, env.stats.deletes}}
  ]
end

Takes you to macro internals instead of:

env do
  field :store, default: %{}, type: :map
  field :stats, default: %{reads: 0, writes: 0, deletes: 0}, type: :map
  field :access_counts, default: %{}, type: :map
end

Expected Behavior

Go-to-definition should navigate to the field definition location in the environment block where the field is declared.

Proposed Solution

Implement a Field Registry Approach using module attributes:

Key Benefits:

• Improved go-to-definition - better than current macros
• Lighter weight - no full struct generation overhead
• Source tracking - maintains field location metadata

Implementation Details:

• Create FieldRegistry.ex to track field locations and provide better macro hygiene
• Store field metadata at compile-time
• Generate helper macros that point to actual field definition locations
• Provide better IDE support without full TypedStruct generation overhead

This approach would maintain field location metadata and generate helper macros that preserve source location information for proper IDE navigation.